Flightradar24 & ShipXplorer Antennas.

[Doombar]

I am a feeder to Flight radar 24, I am planning to feed ShipXplorer in the new year.

I plan to mount the ShipXplorer antenna on a side mount to the existing pole.

Ideally, what would be the minimum distance between the two?

 

[SurgePGH]

They are receive only in this case so it won't matter too much.

 

[Doombar]

They are receive only in this case so it won't matter too much.

Thank you, I just need to wait for better weather to get up on the roof.

 

[mmckenna]

Two conductive devices (the metal of the antenna element) in close proximity, can result in a directional pattern. Similar to how you'd make a Yagi directional array, the antenna can act as a reflector for the other one.

Ideally, you'd want them spaced far enough apart to prevent that. If I recall correctly, you'd want something like 1/2 wavelength at the lowest frequency. So, for the AIS antenna, I'd put about 2 feet between the two antennas. That'll be plenty for the ADS-B antenna.

 

[vagrant]

Leave the ADS-B antenna at the top and move the AIS antenna further down with it facing the direction of the water vessels with the mast behind it. If the direction/pattern you wish to receive for AIS is more than 180 degrees then follow mmckenna’s advice.